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A116278
n times n+9 gives the concatenation of two numbers m and m-2.
4
7040, 487249777145, 512750222847, 684330069116
OFFSET
1,1
EXAMPLE
7040 * 7049 = 4962//4960, where // denotes concatenation.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Giovanni Resta, Feb 06 2006
STATUS
approved